Update owner document of Range objects if start/end boundary points in different document

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 3752 matching lines @@
 
 void Document::updateRangesAfterChildrenChanged(ContainerNode* container)
 {
     if (!m_ranges.isEmpty()) {
         AttachedRangeSet::const_iterator end = m_ranges.end();
         for (AttachedRangeSet::const_iterator it = m_ranges.begin(); it != end; ++it)
             (*it)->nodeChildrenChanged(container);
     }
 }
 
+void Document::updateRangesAfterNodeMovedToAnotherDocument(const Node& node)
+{
+    ASSERT(node.document() != this);
+    if (!m_ranges.isEmpty()) {

[Yuta Kitamura, 2014/06/18 09:30:29]

nit: Early exit is better here.

[yosin_UTC9, 2014/06/18 09:52:33]

Done.

+        AttachedRangeSet ranges = m_ranges;
+        AttachedRangeSet::const_iterator end = ranges.end();
+        for (AttachedRangeSet::const_iterator it = ranges.begin(); it != end; ++it)
+            (*it)->updateOwnerDocumentIfNeeded();
+    }
+}
+
 void Document::nodeChildrenWillBeRemoved(ContainerNode& container)
 {
     NoEventDispatchAssertion assertNoEventDispatch;
     if (!m_ranges.isEmpty()) {
         AttachedRangeSet::const_iterator end = m_ranges.end();
         for (AttachedRangeSet::const_iterator it = m_ranges.begin(); it != end; ++it)
             (*it)->nodeChildrenWillBeRemoved(container);
     }
 
     WillBeHeapHashSet<RawPtrWillBeWeakMember<NodeIterator> >::const_iterator nodeIteratorsEnd = m_nodeIterators.end();
@@ skipping 2071 matching lines @@
     visitor->trace(m_compositorPendingAnimations);
     visitor->trace(m_contextDocument);
     visitor->registerWeakMembers<Document, &Document::clearWeakMembers>(this);
     DocumentSupplementable::trace(visitor);
     TreeScope::trace(visitor);
     ContainerNode::trace(visitor);
     ExecutionContext::trace(visitor);
 }
 
 } // namespace WebCore